On Thursday, November 14, 2013 9:28:35 AM UTC-5, philo wrote:
Then you don't get around much, at least in the USA.
Any new electric dryer, outlet, for example, is 4 prong.
Two hots, neutral, ground.
It's required by code. You can hook up a dryer, stove,
etc to an older 3 wire outlet, but all the new ones for
decades now are 4 wire.
Pretty much every modern Dryer and Oven outlet will be four prong (L1, L2, N, G).
They used to be three (L1, L2, N). Grounding requirements were added sometime
in the 60's or 70's, IIRC.
All Single-phase 240VAC.
On Thursday, November 14, 2013 11:16:58 AM UTC-5, Scott Lurndal wrote:
I think you have it backwards. Grounding was required first. In the 1940's
it was permitted to use the ground as both the eqpt ground and the neutral. That was later changed to require a seperate neutral and ground in the 90's.
Hence, as you say, today 4 wire outlets are common. All new appliances are
made with 4 wire connections and that is the preferred method of connection.
If you have an older existing 3 wire, it's
permissible to follow the appliance manufacturers instructions and connect
it as 3 wire. Most folks understand this, except KRW here who
spent 10 profanity laced posts a few month ago, denying it was so,
while digging his hole ever deeper.
On 11/14/2013 11:35 AM, firstname.lastname@example.org wrote:
I remember three prong range and dryer, and
four prong came out later. What came first,
the neutral or the chicken or the ground or
My comment is grounded in fact, but I remain
neutral, as I egg you on, chicken that I am.
On Thu, 14 Nov 2013 08:35:07 -0800 (PST), " email@example.com"
Actually 250.60 said the "grounded conductor" before 1996 so it was
the neutral and with one exception (SE cable) it needed to be a white
That is why you saw 10/3 romex. If the 10/3 had a ground, it was
either connected to the box or simply cut off.
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